CN111953103A - Servo outer rotor electric roller device for logistics sorting equipment - Google Patents
Servo outer rotor electric roller device for logistics sorting equipment Download PDFInfo
- Publication number
- CN111953103A CN111953103A CN202010955236.6A CN202010955236A CN111953103A CN 111953103 A CN111953103 A CN 111953103A CN 202010955236 A CN202010955236 A CN 202010955236A CN 111953103 A CN111953103 A CN 111953103A
- Authority
- CN
- China
- Prior art keywords
- shaft
- end cover
- outer rotor
- main shaft
- magnetic pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2207/00—Specific aspects not provided for in the other groups of this subclass relating to arrangements for handling mechanical energy
- H02K2207/03—Tubular motors, i.e. rotary motors mounted inside a tube, e.g. for blinds
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
The invention provides a servo outer rotor electric roller device for logistics sorting equipment, which comprises a rotor part, a stator part, a rotating shaft part and a magnetic encoder, wherein the rotor part is arranged on the stator part; the rotor component comprises a cylinder body serving as a shell of the roller device and a magnetic pole fixedly arranged on the inner wall of the cylinder body; the two ends of the cylinder body are respectively provided with a front end cover and a rear end cover, and the middle part of the cylinder body is provided with a middle end cover; the rotating shaft part comprises a secondary shaft and a primary shaft; the auxiliary shaft is arranged on the front end cover through front bearings respectively arranged at two ends; one end of the main shaft is mounted on the middle end cover through a middle bearing, and the other end of the main shaft is mounted on the rear end cover through a rear bearing; the rotating shaft part further comprises a spring, and the auxiliary shaft is provided with a step structure between the front bearings at two ends; the magnetic encoder is fixedly arranged on the main shaft. The invention can realize quick start, quick stop, high-precision control of the rotating speed and high-precision start-stop position control, and ensures that the action of the sorting equipment is more accurate.
Description
Technical Field
The invention relates to the field of logistics sorting equipment, in particular to a servo outer rotor electric roller device for the logistics sorting equipment.
Background
At present, cross belt sorting machines are generally adopted at home and abroad as equipment for sorting packages at high speed in the logistics industry, conveying belts are arranged on trolleys for sorting in the equipment, the belts are conveyed by roller friction, the belts are mainly used for conveying the packages to the trolleys, then the trolleys are transported and packaged to run on rails, when the trolleys run to a specified putting-in opening, the trolleys receive instructions and rapidly put the packages down by the operation of a transmission belt, and the sorting of the packages is completed. In order to improve the sorting efficiency, the driving on the trolley needs to react quickly, and simultaneously, because the sorted wrapping is heavy and light, the power of a motor needing to be driven is higher, and the rotating speed ratio of a roller driving a transmission belt is higher.
The current common application is to use a motor to drive a roller through a reduction gear and a synchronous belt or a brushless direct current outer rotor roller of which the magnetic pole position is sensed by a Hall sensor so as to drive a transmission belt on a trolley. The method that the motor drives the roller through the reduction gear and the synchronous belt has the defects that certain transmission loss is generated, and the efficiency of the reduction gear and the synchronous belt is required to be lost by more than 15 percent at least; meanwhile, gears and synchronous belts in the structure can generate certain abrasion after long-time operation, so that a large amount of later maintenance cost is caused; the noise of the equipment is high due to the use of gears and synchronous belts, and the working environment is seriously influenced when the equipment is operated; the motor is added with the reduction gear and the synchronous belt, so that the structure of the trolley is more complex, more space is occupied, and the number of the effectively sorted trolleys is reduced. The electric roller using the Hall sensor has relatively low control precision, and a higher sorting error rate can occur under the condition that the sorting efficiency requirement is higher and higher.
Disclosure of Invention
In view of the defects in the prior art, the novel servo outer rotor electric roller device used for driving the logistics sorting equipment is provided, and the electric roller device has the advantages of simple structure, low cost, low running noise, capability of realizing quick start and quick stop, high-precision control of the rotating speed and high-precision start and stop position control, and more accurate action of the sorting equipment.
The technical means adopted by the invention are as follows:
a servo outer rotor motorized roller device for logistics sorting equipment comprises a rotor component, a stator component and a rotating shaft component, and further comprises: a magnetic encoder;
the rotor component comprises a cylinder body serving as a shell of the roller device and a magnetic pole fixedly arranged on the inner wall of the cylinder body;
a front end cover and a rear end cover are respectively fixedly arranged at two ends of the cylinder body, and a middle end cover is fixedly arranged in the middle of the cylinder body;
the rotating shaft part comprises a secondary shaft and a primary shaft; the auxiliary shaft is arranged on the front end cover through front bearings respectively arranged at two ends; one end of the main shaft is mounted on the middle end cover through a middle bearing, and the other end of the main shaft is mounted on the rear end cover through a rear bearing;
the rotating shaft part also comprises a spring, the auxiliary shaft is provided with a step structure between the front bearings at two ends, one end of the spring is arranged on the step structure, and the other end of the spring is arranged on the front bearing at the outer side of the auxiliary shaft;
the stator component is fixedly arranged on the main shaft, and the magnetic pole is positioned on the outer side of the stator component;
the magnetic encoder is fixedly arranged on the main shaft.
Further, the magnetic encoder is used to sense the position of the magnetic pole.
Furthermore, the stator part consists of a plurality of silicon steel sheets and windings; the winding is a single-phase winding or a multi-phase winding.
Further, the cylinder is of a cylindrical hollow structure.
Further, the magnetic pole is a permanent magnet with a cylindrical hollow structure, and the magnetic pole is attached to the inner wall of the cylinder body.
Further, the main shaft is of a hollow shaft structure, and the outgoing line of the stator component is led out from the hollow through hole of the hollow shaft structure.
Further, the rotating shaft part further comprises the heat sink, and the heat sink is mounted at the front end of the main shaft.
Compared with the prior art, the invention has the following advantages:
1. the servo outer rotor electric roller device provided by the invention uses the magnetic encoder as a position sensor, directly induces the rotor magnetic pole, can generate more than 4000 pulse signals after rotating for one circle, has extremely high control precision, directly induces the rotor magnetic pole, and has an absolute position relation with the rotor; meanwhile, a broken shaft structure is used, the roller fixing shaft is divided into an auxiliary shaft and a main shaft, and the main shaft is used for fixing the stator component and the magnetic encoder; the auxiliary shaft is used for supporting the other end of the roller, and the structure avoids the problem of poor jumping degree of long shaft processing and reduces the processing difficulty.
2. The servo outer rotor electric roller device provided by the invention uses an elastic shaft structure, a spring is arranged between the auxiliary shaft step and the front bearing, and the auxiliary shaft extension part can be compressed or stretched, so that an elastic solution is provided for fixing the roller and the bracket.
3. The servo outer rotor electric roller device provided by the invention uses the radiation type heat dissipation device, and solves the problem of large heat productivity of a direct-drive type roller.
Based on the reason, the invention can be widely popularized in the fields of logistics sorting equipment and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a servo outer rotor electric drum device according to the present invention.
In the figure: 1. a counter shaft; 2. a front end cover; 3. a spring; 4. a front bearing; 5. a barrel; 6. a heat sink; 7. a middle end cover; 8. a middle bearing; 9. a main shaft; 10. a stator component; 11. a magnetic pole; 12. a magnetic encoder; 13. a rear end cap; 14. a rear bearing; 15. and (6) leading out wires.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Example 1
As shown in fig. 1, the present invention provides a servo outer rotor electric roller device for a logistics sorting apparatus, which comprises a rotor component, a stator component 10 and a rotating shaft component, and further comprises: a magnetic encoder 12;
the rotor part comprises a cylinder 5 as a shell of the roller device and a magnetic pole 11 fixedly arranged on the inner wall of the cylinder 5;
the two ends of the cylinder 5 are respectively fixedly provided with a front end cover 2 and a rear end cover 13, and the middle part is fixedly provided with a middle end cover 7;
the rotating shaft parts comprise a secondary shaft 1 and a primary shaft 9; the auxiliary shaft 1 is arranged on the front end cover 2 through front bearings 4 respectively arranged at two ends; one end of the main shaft 9 is mounted on the middle end cover 7 through a middle bearing 8, and the other end of the main shaft is mounted on the rear end cover 13 through a rear bearing 14;
the rotating shaft part also comprises a spring 3, the auxiliary shaft 1 is provided with a step structure between the front bearings 4 at two ends, one end of the spring 3 is arranged on the step structure, and the other end of the spring is arranged on the front bearing 4 at the outer side of the auxiliary shaft 1;
the stator part 10 is fixedly arranged on the main shaft 9, and the magnetic pole 11 is positioned outside the stator part 10;
the magnetic encoder 12 is fixedly provided to the spindle 9.
Further, the magnetic encoder 12 is used to sense the position of the magnetic pole 11.
Further, the stator part 9 is composed of a plurality of silicon steel sheets and windings; the winding is a single-phase winding or a multi-phase winding.
Further, the cylinder 5 is a cylindrical hollow structure.
Further, the magnetic pole 11 is a permanent magnet with a cylindrical hollow structure, and the magnetic pole 11 is attached to the inner wall of the cylinder 5.
Further, the magnetic pole 11 is divided into an N pole and an S pole, which are alternately attached to the inner wall of the cylinder 5, and N, S poles alternately pass through the inductive chip of the magnetic encoder 12 when rotating together with the cylinder 5.
Further, the main shaft 9 is a hollow shaft structure, and the leading-out wire 15 of the stator component is led out from a hollow through hole of the hollow shaft structure.
Further, the rotating shaft part further comprises the heat sink 6, and the heat sink 6 is mounted at the front end of the main shaft 9.
Furthermore, one end of each of the auxiliary shaft 1 and the main shaft 9 extends out of the cylinder 5, when the auxiliary shaft 1 and the main shaft 9 are used, the extending parts of the auxiliary shaft 1 and the main shaft 9 are used for fixedly connecting an external support, when the size of the roller is deviated from that of the fixed support, the extending parts of the auxiliary shaft 1 can be stretched/compressed, and the external support can be prevented from deforming and the bearing can be prevented from bearing axial tension.
The working principle of the invention is as follows: the magnetic encoder 12 senses the position of the magnetic pole 11, an external driver (such as a servo motor) gives corresponding current according to a pulse signal fed back by the magnetic encoder 12, so as to control the stator component 10 to generate a rotating magnetic field attracted with the magnetic pole 11, the rotating magnetic field changes corresponding rotating speed of the rotating magnetic field along with the frequency change of the external driver driving power supply current, and consequently the magnetic pole 11, is driven to rotate correspondingly, and since the magnetic pole 11 is directly attached to the inner wall of the cylinder 5, the stator component 10 is fixed on the main shaft 9, and the two ends of the main shaft 9 are respectively provided with a middle bearing 8 and a rear bearing 14, and is fixed on the cylinder 5 through a middle end cover 7 and a rear end cover 13 to form an outer rotor motor structure, when the main shaft 9 and the auxiliary shaft 1 are fixed, the cylinder 5 can rotate along with the magnetic poles 11 to generate rotation of the roller, so that a conveying belt on sorting equipment is driven; due to the arrangement of the magnetic encoder 12, the absolute position of the magnetic pole can be induced in time, so that the device can be started and stopped rapidly, the position is accurate, and the accurate control of the sorting equipment in a high-speed running state can be met.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A servo outer rotor motorized roller apparatus for a logistics sorting apparatus, comprising a rotor component, a stator component (10) and a rotating shaft component, characterized by further comprising: a magnetic encoder (12);
the rotor part comprises a cylinder (5) serving as a shell of the roller device and a magnetic pole (11) fixedly arranged on the inner wall of the cylinder (5);
a front end cover (2) and a rear end cover (13) are respectively fixedly arranged at two ends of the cylinder body (5), and a middle end cover (7) is fixedly arranged in the middle;
the rotating shaft parts comprise a secondary shaft (1) and a primary shaft (9); the auxiliary shaft (1) is arranged on the front end cover (2) through front bearings (4) respectively arranged at two ends; one end of the main shaft (9) is mounted on the middle end cover (7) through a middle bearing (8), and the other end of the main shaft is mounted on the rear end cover (13) through a rear bearing (14);
the rotating shaft part further comprises a spring (3), a step structure is arranged between the front bearings (4) at two ends of the auxiliary shaft (1), one end of the spring (3) is installed on the step structure, and the other end of the spring is installed on the front bearing (4) at the outer side of the auxiliary shaft (1);
the stator component (10) is fixedly arranged on the main shaft (9), and the magnetic pole (11) is positioned outside the stator component (10);
the magnetic encoder (12) is fixedly arranged on the main shaft (9).
2. The servo outer rotor motorized roller apparatus of claim 1, wherein: the magnetic encoder (12) is used for sensing the position of the magnetic pole (11).
3. The servo outer rotor motorized roller apparatus of claim 1, wherein: the stator component (9) is composed of a plurality of silicon steel sheets and windings; the winding is a single-phase winding or a multi-phase winding.
4. The servo outer rotor motorized roller apparatus of claim 1, wherein: the cylinder body (5) is of a cylindrical hollow structure.
5. The servo outer rotor motorized roller apparatus of claim 1, wherein: the magnetic pole (11) is a permanent magnet with a cylindrical hollow structure, and the magnetic pole (11) is attached to the inner wall of the cylinder body (5).
6. The servo outer rotor motorized roller apparatus of claim 3, wherein: the main shaft (9) is of a hollow shaft structure, and the leading-out wire (15) of the stator component is led out from the hollow through hole of the hollow shaft structure.
7. The servo outer rotor motorized roller apparatus of claim 1, wherein: the rotating shaft component further comprises the radiator (6), and the radiator (6) is installed at the front end of the main shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955236.6A CN111953103A (en) | 2020-09-11 | 2020-09-11 | Servo outer rotor electric roller device for logistics sorting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955236.6A CN111953103A (en) | 2020-09-11 | 2020-09-11 | Servo outer rotor electric roller device for logistics sorting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111953103A true CN111953103A (en) | 2020-11-17 |
Family
ID=73356339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010955236.6A Pending CN111953103A (en) | 2020-09-11 | 2020-09-11 | Servo outer rotor electric roller device for logistics sorting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111953103A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117118158A (en) * | 2023-10-20 | 2023-11-24 | 盛视科技股份有限公司 | Outer rotor motor and calibration method |
-
2020
- 2020-09-11 CN CN202010955236.6A patent/CN111953103A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117118158A (en) * | 2023-10-20 | 2023-11-24 | 盛视科技股份有限公司 | Outer rotor motor and calibration method |
| CN117118158B (en) * | 2023-10-20 | 2024-03-08 | 盛视科技股份有限公司 | Outer rotor motor and calibration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101009455B (en) | Long range big-push force permanent-magnet brushless linear DC motor | |
| CN102497080B (en) | Moving magnet type linear rotation two-degree-of-freedom motor | |
| CN203691197U (en) | Brushless direct-current outer-rotor electric roller apparatus used for logistics sorting equipment | |
| CN101970324B (en) | Thread guide on wheels | |
| CN111953103A (en) | Servo outer rotor electric roller device for logistics sorting equipment | |
| CN103986301A (en) | High-dynamic moving-magnetic type linear rotation integrated two-degree-of-freedom motor | |
| CN212304922U (en) | Servo outer rotor electric roller device for logistics sorting equipment | |
| CN104934216A (en) | Special-shaped coil numerical control winding machine | |
| US20040041474A1 (en) | Linear motor | |
| EP0623254A4 (en) | Ac machine. | |
| CN102730526A (en) | Elevator traction machine | |
| CN109715529A (en) | Work sheet conveying device | |
| CN203699538U (en) | Guide wheel carrier | |
| CN203699153U (en) | Multi-way conveying mechanism | |
| CN109617360A (en) | Multiple degrees of freedom rotation and linear compound motion motor | |
| CN103580407A (en) | Permanent magnetic synchronous combination motor | |
| CN108439239B (en) | A kind of motor reel integration jack up unit structure | |
| CN209805588U (en) | Permanent magnet collar motor | |
| CN111953104A (en) | External rotor direct-drive electric roller device for automatic door | |
| EP1475340A1 (en) | Device for individual driving of rotary means for transport or winding a textile material in an operating unit of a textile machine | |
| CN106655702A (en) | Dual-excitation modular reciprocating permanent-magnet linear motor with high thrust density | |
| KR20230054842A (en) | Single item separation system | |
| CN203840182U (en) | High-dynamic moving magnetic type linear rotation integrated two-degree-of-freedom motor | |
| CN207638533U (en) | Switched reluctance machines and treadmill for treadmill | |
| CN201286058Y (en) | Motor apparatus having Hall sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211125 Address after: 215400 Building 2, No. 36, Dalian East Road, Taicang City, Suzhou City, Jiangsu Province Applicant after: Jiangsu moandi Technology Co.,Ltd. Address before: 116000 1205, block a, design city, No.10 Aixian street, Qixianling, hi tech park, Dalian, Liaoning Applicant before: DALIAN HANG'ANXIANG MOTOR TECHNOLOGY Co.,Ltd. |